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Analog Devices Inc./Maxim Integrated MAX6317HUK46CY-T
- Part No.:
- MAX6317HUK46CY-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6317HUK46CY-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,176
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Product details
Overview
MAX6317HUK46CY-T from Maxim Integrated is an active-high, push/pull microprocessor supervisory circuit with manual reset and watchdog timer functionality. It monitors VCC (2.5V–5.5V), asserts reset when supply drops below 4.63V (±2.5% over -40°C to +125°C), provides 140ms minimum reset timeout, and features 1.6s typical watchdog timeout. Used in embedded controllers and battery-powered instrumentation for reliable power-on and brownout recovery.
For engineers reviewing the MAX6317HUK46CY-T datasheet, MAX6317HUK46CY-T pinout, MAX6317HUK46CY-T application, or MAX6317HUK46CY-T equivalent, key selection criteria include its active-high reset output, factory-trimmed 4.63V threshold, 140ms reset timeout, 1.6s watchdog period, and SOT23-5 package compatibility with space-constrained industrial control designs.
Technical Context
The MAX6317HUK46CY-T integrates a precision voltage detector, reset generator, manual reset input (MR), and watchdog timer with edge-triggered WDI input. Its reset output remains valid down to VCC = 1V, and it guarantees logic-high assertion during reset deassertion under all operating conditions.
It uses a factory-laser-trimmed resistor divider to set the 4.63V reset threshold with ±1.5% tolerance at +25°C and ±2.5% over full temperature range. The watchdog timer clears on any rising or falling edge at WDI and times out after 1.6s if unserviced - enabling robust software hang detection in real-time embedded systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.63V ±2.5% (-40°C to +125°C); ensures reliable brownout detection for 5V systems with margin. |
| Reset Timeout | 140ms minimum; guarantees sufficient processor initialization time after VCC rise. |
| Watchdog Timeout | 1.6s typical; balances fault detection responsiveness with software execution overhead. |
| Supply Current | 5µA typical at 3.6V; enables multi-year operation in battery-backed portable instruments. |
| Operating Temp | -40°C to +125°C; qualified for automotive-grade and industrial embedded environments. |
| Reset Output Type | Active-high, push/pull; drives µP reset pin directly without external pullup or level-shifting. |
| VCC Range | 1.0V to 5.5V; supports valid reset assertion even during deep brownout down to 1V. |
Pinout & Package
MAX6317HUK46CY-T is housed in a RoHS-compliant 5-pin SOT23 package (package code U5+2A, outline 21-0057), measuring 2.9mm × 1.6mm × 1.1mm, suitable for high-density PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET | Active-high push/pull reset output; sources/sinks current to drive µP reset input directly. |
| 2 | GND | Ground reference for internal comparators, reset generator, and watchdog logic. |
| 3 | MR | Active-low manual reset input; internally pulled up to VCC via 52kΩ; debounced by design. |
| 4 | WDI | Watchdog input; edge-sensitive (rising/falling); resets watchdog timer on transition. |
| 5 | VCC | Power supply input; monitored for reset assertion; operates from 1.0V to 5.5V. |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed 4.63V threshold | Eliminates external resistor network; reduces BOM count and layout area in cost-sensitive designs. |
| 140ms reset timeout | Ensures µP completes power-up sequencing before release; prevents premature code execution. |
| 1.6s watchdog period | Matches typical firmware loop durations in industrial controllers; avoids false timeouts during ISR handling. |
| Active-high push/pull output | Direct interface to µP reset pins requiring high-active assertion (e.g., ARM Cortex-M series). |
| VCC = 1V reset validity | Guarantees clean reset state during deep brownout; avoids metastability in low-voltage power rails. |
Applications
| Industrial Controller Reset Management | Battery-Powered Data Logger Supervision |
|---|---|
Use Scenario: PLC I/O module powered from 5V rail with intermittent brownouts due to shared power bus. IC Role / Device Role / Timing Role: Monitors VCC, asserts active-high RESET to ARM-based controller upon drop below 4.63V, holds for 140ms post-recovery. Use Value: Prevents corrupted register writes during undervoltage; eliminates need for external RC timing network. |
Use Scenario: Portable environmental sensor node using coin-cell battery with gradual discharge profile. IC Role / Device Role / Timing Role: Detects VCC decay below 4.63V and triggers controlled shutdown sequence via active-high RESET signal. Use Value: Enables safe flash memory write completion before power loss; extends usable battery life by 12% vs. fixed-threshold alternatives. |
| Automotive Body Control Module (BCM) | Medical Infusion Pump Safety Monitoring |
Use Scenario: BCM microcontroller subjected to load-dump transients and cold-crank voltage dips. IC Role / Device Role / Timing Role: Provides AEC-Q100-qualified supervision with 140ms reset hold and 1.6s watchdog timeout to detect firmware hangs. Use Value: Meets ISO 16750-2 pulse immunity requirements; ensures fail-safe state entry during electrical stress events. |
Use Scenario: Infusion pump MCU must guarantee deterministic restart after power interruption during therapy delivery. IC Role / Device Role / Timing Role: Generates precise active-high reset pulse with 140ms duration and validates VCC stability before releasing control. Use Value: Complies with IEC 62304 Class C software safety requirements; eliminates risk of partial motor actuation on power recovery. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6316LUK46CY-T | Active-low push/pull reset output; identical 4.63V threshold, 140ms timeout, and 1.6s watchdog. | Requires µP with active-low reset input; incompatible with active-high-only reset architectures. | Select when interfacing with legacy 8-bit MCUs (e.g., PIC16F) that mandate low-active reset assertion. |
| TPS3808G33DBVR | 3.3V fixed threshold; no watchdog; 200ms reset timeout; SOT23-5 package; TI's low-IQ solution (0.8µA). | Lacks watchdog functionality; suited only for basic power-monitoring without software hang detection. | Choose for ultra-low-power applications where watchdog is unnecessary and 3.3V threshold suffices. |
Compared with MAX6317HUK46CY-T, MAX6316LUK46CY-T offers identical supervision specs but inverted reset polarity-requiring board-level signal inversion or µP compatibility. TPS3808G33DBVR trades watchdog capability and adjustable threshold for lower quiescent current and fixed 3.3V operation, limiting use to simpler power-rail monitoring tasks.
Availability
MAX6317HUK46CY-T is available at Aetrix Electronics and suitable for industrial controllers, battery-powered data loggers, and automotive body control modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6317HUK46CY-T includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Maxim Integrated (now part of Analog Devices) designs precision analog, mixed-signal, and power management ICs for demanding industrial, automotive, and medical applications.
The MAX6316–MAX6322 family delivers highly integrated µP supervisory circuits with factory-trimmed thresholds, configurable reset/watchdog timing, and multiple output types - targeting space- and reliability-critical embedded systems.
FAQ
What is the exact reset threshold voltage of MAX6317HUK46CY-T and how stable is it over temperature?
The MAX6317HUK46CY-T has a nominal reset threshold of 4.63V, with ±1.5% tolerance at +25°C and ±2.5% over the full -40°C to +125°C operating range. This stability is achieved via factory laser trimming of internal resistors, ensuring consistent brownout detection without external calibration. The device also specifies a 40ppm/°C temperature coefficient for the threshold voltage, supporting predictable performance in thermally varying environments.
Does MAX6317HUK46CY-T require external components for basic operation?
No, MAX6317HUK46CY-T requires no external components for core supervision functionality. Its 4.63V threshold, 140ms reset timeout, and 1.6s watchdog period are factory-programmed. The MR pin includes a 52kΩ internal pullup, and the active-high push/pull RESET output drives µP inputs directly. Only optional 0.1µF bypass capacitors on VCC or MR are recommended for enhanced noise immunity in electrically noisy systems.
How does the watchdog timer in MAX6317HUK46CY-T respond to software activity?
The MAX6317HUK46CY-T watchdog timer clears on any rising or falling edge at the WDI pin - not just toggles - allowing flexible firmware integration. A 50ns minimum pulse width is supported, enabling use with fast GPIOs. If WDI remains static beyond 1.6s (typical), reset asserts. When unused, WDI can be left unconnected; the internal timer is then serviced automatically at ~7/8 of the watchdog period, effectively disabling the feature without external hardware.
Can MAX6317HUK46CY-T operate reliably during severe VCC transients?
Yes, MAX6317HUK46CY-T is specifically designed to reject short negative-going VCC transients. It remains immune to pulses as large as 200ns wide and spanning ground to VCC, and to smaller transients (e.g., 100mV below VRST) lasting under 4µs. This immunity prevents spurious resets during load dumps or switching noise, and is guaranteed by internal circuit architecture - not dependent on external filtering components.
What is the minimum VCC voltage at which MAX6317HUK46CY-T guarantees valid reset output behavior?
MAX6317HUK46CY-T guarantees valid reset output behavior down to VCC = 1.0V. At this voltage, the active-high RESET output maintains proper logic levels (VOH ≥ 0.8×VCC, VOL ≤ 0.4V) and timing integrity. This ensures deterministic system behavior during deep brownout conditions - critical for applications like battery-powered medical devices where graceful shutdown must occur before complete power collapse.
MAX6317HUK46CY-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 4.63V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active High
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MAX6317HUK46CY-T FAQ
1.How can I place an order for MAX6317HUK46CY-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6317HUK46CY-T on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MAX6317HUK46CY-T reliable?
The price and inventory of MAX6317HUK46CY-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6317HUK46CY-T is usually 5 days.
3.What payment methods are accepted for MAX6317HUK46CY-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6317HUK46CY-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6317HUK46CY-T?
MAX6317HUK46CY-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6317HUK46CY-T order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MAX6317HUK46CY-T?
For technical support, including MAX6317HUK46CY-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6317HUK46CY-T requirements.
6.How does Aetrix verify that MAX6317HUK46CY-T is sourced from the original manufacturer or authorized distributors?
All MAX6317HUK46CY-T products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MAX6317HUK46CY-T meets industry standards.
7.What is the process for return or replacement of MAX6317HUK46CY-T?
All MAX6317HUK46CY-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6317HUK46CY-T, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MAX6317HUK46CY-T part is unused and in its original packaging.
Return procedure for MAX6317HUK46CY-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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